Method and device for rapidly measuring gas content of coal seam

A technology for rapid measurement of coal seam gas, applied in the direction of analyzing materials, instruments, etc., can solve the problems of cumbersome steps and high time cost, and achieve the effects of simple operation, simple method and shortening of the measurement period.
CN112858088AInactive Publication Date: 2021-05-28江苏东科安全研究院有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
江苏东科安全研究院有限公司
Publication Date
2021-05-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and device for rapidly determining the gas content of a coal seam, and belongs to the technical field of coal mine safety. A crushing device is adopted, and in the process of taking a coal sample underground, the time from coal drilling to loading of the coal sample into the crushing device, temperature and atmospheric pressure parameters are recorded through a pressure sensor; after well lifting, the crushing device filled with coal samples is installed on a weighing device for crushing, the weights of the coal samples in different stages are weighed through the weighing device, the gas density serves as a bridge, the gas volume is calculated through the weight change value, and the content of desorbed gas in the crushing process is calculated; the problems that an existing gas content measuring technology is complex in method and high in time cost are solved. The device is simple and convenient to operate, high in practicability, time-saving, labor-saving, low in cost and capable of quickly and accurately measuring the coal seam gas content.
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Description

technical field

[0001] The invention relates to the technical field of coal mine safety, in particular to a method and a device for quickly measuring the gas content of coal seams for on-site gas measurement in coal mines. Background technique

[0002] In the field of coal mine safety, the gas content of coal seams has always been considered as one of the important parameters to reflect the risk of gas outburst at the site, and it is also an important basis for predicting the amount of gas emission in mines and judging whether the gas drainage is up to standard. At present, the method of on-site measurement of coal seam gas content at home and abroad is mainly the direct method, that is, the coal core is drilled on site, and the on-site desorption measurement is carried out. The gas content determined by the direct method is mainly composed of five parts: downhole loss, downhole desorption, uphole desorption before pulverization, uphole pulverization desorption and normal pr...

Claims

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